**3. Results**

#### *3.1. Evaluation Results and Analysis of the PLEF of Land*

The evaluation values of the production function, living function and ecological function of Jiangjin District in 2018 were obtained by using the evaluation system of the PLEF of land (Figure 2). The results showed that the evaluation value of the land production function in Jiangjin District presented a spatial differentiation characteristic that was high in the north and low in the south. The high-scoring areas of the land production function were distributed in Wutan Town, Youxi Town, Shima Town and so on. The production function value of land in the southern region of Jiangjin District, such as Caijia Town, Zhongshan Town and Siping town, was relatively low. Areas with high living function values were mainly distributed in areas with high living function values and were mainly distributed in Shuangfu Street, Degan Street and Luohuang Town. In addition, the spatial distribution of living function values and production function values showed obvious consistency. Moreover, the distribution characteristics of ecological function values and the distribution characteristics of production function values showed significant spatial complementarity. Furthermore, areas with high ecological function values were mainly distributed in the south region of Jiangjin District, such as Bolin Town, Zhongshan Town and Caijia Town, which had low production function and living function scores. At the same time, the areas with low ecological function values were distributed in these areas with strong production function and living function.
